An iron block is placed in a furnace where it is heated and consequently expands.In the expanded condition,its density
A)is less.
B)is the same.
C)is more.

Question

Quizplus · Accepted Answer

As the iron block is heated, its particles gain kinetic energy and start vibrating faster, causing it to expand. When the volume of the block increases while its mass remains constant, the density decreases. Therefore, the correct choice is A, which states that the density of the expanded iron block is less.

An Iron Block Is Placed in a Furnace Where It